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High-voltage switchgear partial discharge on-line monitoring system

A high-voltage switchgear, partial discharge technology, applied in the direction of testing dielectric strength, etc.

Active Publication Date: 2017-08-08
高海涛
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Problems solved by technology

[0003] Aiming at the above technical problems, the present invention is specially aimed at the field of partial discharge detection of high-voltage switchgear, and develops a partial discharge on-line monitoring system for high-voltage switchgear. The on-line partial discharge monitoring system can not only realize long-term real-time By analyzing the monitoring data to locate the source of partial discharge, it solves the problem of accurately judging the source of partial discharge that requires the cooperation of multiple devices

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  • High-voltage switchgear partial discharge on-line monitoring system

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Embodiment Construction

[0024] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0025] Such as figure 1 As shown, the high-voltage switchgear partial discharge on-line monitoring system is mainly composed of partial discharge signal sensors 3, 4, 5, signal transmission cable 6, central data analyzer host 2 and partial discharge spectrum analyzer 7. The system is used for continuous online monitoring of high-voltage switchgear in operation. When partial discharge occurs inside the switchgear, the partial discharge signal is collected and amplified by the sensor, and the data is analyzed in the central ...

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Abstract

The invention discloses an online monitoring system for partial discharge of a high-voltage switch cabinet. The online monitoring system comprises a central data analyzer host, a plurality of partial discharge signal sensors and a partial discharge spectrum analyzer, wherein the central data analyzer host is used for receiving signals from the partial discharge signal sensors through signal transmission cables, processing the signals and transmitting an analysis result to the partial discharge spectrum analyzer through a network communication interface; the partial discharge signal sensors are used for collecting partial discharge of the high-voltage switch cabinet; the partial discharge spectrum analyzer is used for carrying out in-depth analysis and positioning on the partial discharge. Through the online monitoring system, a reliable partial discharge monitoring and positioning method is provided for monitoring of the partial discharge of the high-voltage switch cabinet, and the online monitoring system can give an alarm at the beginning stage of an insulation fault of the high-voltage switch cabinet, play a role in preventing major accidents, and meet the requirement of an intelligent power grid for high power supply reliability.

Description

technical field [0001] The invention relates to partial discharge monitoring, and more specifically, to an on-line monitoring system for partial discharge of a high-voltage switchgear. Background technique [0002] High-voltage switchgear is an important infrastructure in urban distribution network, and its operation stability directly affects the development of urban economy. Condition-based maintenance and on-line monitoring are important technical means to improve the reliability of high-voltage switchgear. According to statistics, insulation and current-carrying faults account for more than half of switchgear faults. Partial discharge is an important indicator to characterize the insulation and current-carrying problems of high-voltage switchgear. Research on partial discharge detection and on-line monitoring technology of high-voltage switchgear is of great significance to improving power supply reliability. Significance. Partial discharge measurement of high-voltage ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 高海涛
Owner 高海涛
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